"K" terminals on transformer board - see pics

[craigen]

So I connected the transformer board to the preamp and plugged it in and ... nothing., The LED on the board didn't go on. There is a pair of "K" terminals on the transformer board so I suspect it has something to do with these. Shouldn't the transformers however work without these connected? Not sure ... please advise. Thanks.

 

[rayma]

What is the mfr, and also the complete mfr part number of the transformer?

 

[craigen]

The mfgr is UMI--apparently. But whether or not they make the whole board, I don't know. See pic of whole board. I sent the seller an email for more detailed wiring instructions.

 

[ejp]

That’s where you connect the power switch.

 

[rayma]

Hopefully the instructions will be better than the board markings.